501  
CDUS43 KLOT 170655  
CLIRFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
155 AM CDT FRI AUG 17 2018  
 
   
...............................
 
 
   
..THE ROCKFORD IL CLIMATE SUMMARY FOR AUGUST 16 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1905 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 84 301 PM 104 1988 83 1 91  
MINIMUM 66 1159 PM 44 1992 62 4 65  
AVERAGE 75 72 3 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.37 3.58 1968 0.15 0.22 0.43  
MONTH TO DATE 2.69 2.43 0.26 0.56  
SINCE JUN 1 19.30 11.03 8.27 15.48  
SINCE JAN 1 31.31 23.50 7.81 34.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE JUN 1 4 34 -30 12  
SINCE JUL 1 0 3 -3 1  
 
COOLING  
YESTERDAY 10 7 3 13  
MONTH TO DATE 149 126 23 97  
SINCE JUN 1 595 575 20 598  
SINCE JAN 1 710 630 80 634    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 3.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 300 AM  
LOWEST 65 300 PM  
AVERAGE 83  
   
......................................................
 
 
 
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 102 1988  
MINIMUM TEMPERATURE (F) 62 46 1924  
 
 
SUNRISE AND SUNSET  
AUGUST 17 2018........SUNRISE 606 AM CDT SUNSET 754 PM CDT  
AUGUST 18 2018........SUNRISE 607 AM CDT SUNSET 753 PM CDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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